Fluid-sealed operation cabin and dry cabin

The invention discloses a fluid-sealed operation cabin and a dry cabin. The operation cabin comprises a cabin main body and a sealing structure; the cabin main body comprises an upper cabin body and a lower cabin body; the upper cabin body is provided with an upper joint, and the lower cabin body is provided with a lower joint; the lower cabin body can rotate relative to the upper cabin body so that the lower joint can rotate relative to the upper joint to form an openable joint, and therefore a pipeline can penetrate through an operation space formed by the upper cabin body and the lower cabin body through the joint; the sealing structure comprises a cabin body sealing mechanism and a joint sealing mechanism; the cabin body sealing mechanism and the joint sealing mechanism form a bulge in an air inflation or liquid filling manner; and the bulge is used for completing the sealing. The problems that the setting time is long, the setting effect is poor, the sealing pressure cannot be measured and the sealing li